There happens to be a number of tumors that crop up from the connective tissue which covers the nerves. These include neurofibrosarcomas, neurofibromas, and amputation neuromas.
Neurofibromas and neurofibrosarcomas are tumors that also develop in the connective tissue surrounding a nerve. They are mainly found in elderly dogs. Their characteristic appearance is white, solid, swellings. They can be either benign or malignant. A majority of them are deeply localised and are rarely widespread. The preferred mode of treatment is total surgical removal, followed by radiation treatment to inhibit recurring growth.
Amputation neuromas are jumbled growths that develop after amputation or a harrowing injury, with most occurring subsequent to tail docking in dogs. Young dogs that constantly bother a docked tail are most susceptible. They require surgical removal.